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Q. No.In frogs, vasa efferentia:
I:
are 100-120 in number that arise from testes
II:
enter the kidneys on their side and open into Bidder’s canal
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Frogs: Anatomy (Male Reproductive System) |
74%
From NCERT
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Trace the correct path of passage of the sperm in male Rana tigrina:
| 1. | Testes → Vasa efferentia → Kidney → Seminal vesicle → Urogenital duct → Cloaca |
| 2. | Testes → Vasa efferentia → Bidder’s canal → Ureter → Cloaca |
| 3. | Testes → Vasa efferentia → Kidney → Bidder’s canal → Urogenital duct → Cloaca |
| 4. | Testes → Bidder’s canal → Kidney → Vasa efferentia → Urogenital duct → Cloaca |
Subtopic: Frogs: Anatomy (Male Reproductive System) |
78%
From NCERT
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The cloaca in a frog is a small, median chamber that is used to pass:
| 1. | only faecal matter to the exterior. |
| 2. | only faecal matter and urine but not sperms to the exterior. |
| 3. | faecal matter, urine and sperms to the exterior. |
| 4. | faecal matter and sperms but not urine to the exterior. |
Subtopic: Frogs: Anatomy (Excretory System) |
96%
From NCERT
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Mesorchium in frogs:
| 1. | is a double fold of peritoneum that adheres testes to kidney. |
| 2. | is a double fold of peritoneum that adheres ovaries to kidney. |
| 3. | is the outer cortical part of testes. |
| 4. | is the outer cortical part of ovaries. |
Subtopic: Frogs: Anatomy (Male Reproductive System) |
90%
From NCERT
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Consider the two statements:
| Statement I: | In male frogs, the testes are found adhered to the upper part of the kidneys and have a functional connection with the kidneys. |
| Statement II: | In female frogs, the ovaries are situated near the kidneys and there is no functional connection with the kidneys. |
| 1. | Statement I is correct, Statement II is correct |
| 2. | Statement I is incorrect, Statement II is correct |
| 3. | Statement I is correct, Statement II is incorrect |
| 4. | Statement I is incorrect, Statement II is incorrect |
Subtopic: Frogs: Anatomy (Male Reproductive System) |
94%
From NCERT
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A pair of oviducts arising from the ovaries in female frogs:
| 1. | join to form a single median duct that opens into the cloaca. |
| 2. | opens into the cloaca separately. |
| 3. | opens separately to the exterior through the skin. |
| 4. | join to form a single median duct that opens into Bidder’s canal. |
Subtopic: Frogs: Anatomy (Female Reproductive System) |
75%
From NCERT
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In frog:
| 1. | Fertilisation is external, takes place in water while development involves a larval stage called tadpole that undergoes metamorphosis to form the adult. |
| 2. | Fertilisation is internal, takes place inside the female body while development involves a larval stage called tadpole that undergoes metamorphosis to form the adult. |
| 3. | Fertilisation is external, takes place in water while development involves a larval stage called instar that undergoes paurometabolous metamorphosis to form the adult. |
| 4. | Fertilisation is internal, takes place inside the female body while development involves a larval stage called instar that moults 13 times to form the adult. |
Subtopic: Frogs: Anatomy (Female Reproductive System) |
95%
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The number of ova that can be laid by a mature female frog at a time varies between:
| 1. | 100 to 200 | 2. | 750 to 1250 |
| 3. | 2500 to 3000 | 4. | 8000 to 10000 |
Subtopic: Frogs: Anatomy (Female Reproductive System) |
93%
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Frogs are beneficial for mankind because:
| 1. | they are an important source of food all over the world. |
| 2. | toxins derived from them can cure many human ailments. |
| 3. | while burrowing, they loosen soil in arid environments making the soil highly fertile. |
| 4. | they eat insects and protect the crop. |
Subtopic: Frogs | How Frogs are Beneficial for Mankind? |
89%
From NCERT
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In the given diagrammatic representation of internal organs of a frog showing the complete digestive system, identify I, II, III, IV:
| I | II | III | IV | |
| 1. | Oesophagus | Liver | Gall bladder | Fat bodies |
| 2. | Pharynx | Liver | Gall bladder | Uricose glands |
| 3. | Buccal cavity | Gall bladder | Liver | Antennal glands |
| 4. | Oesophagus | Gall bladder | Liver | Fat bodies |
Subtopic: Frogs: Anatomy (Digestive System) |
87%
From NCERT
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